<template>
	<view class="preview">
		<swiper circular @change="imgChange" :current="imgIndex - 1">
			<swiper-item v-for="(item, index) in arrImg" :key="item._id">
				<image v-if="currentIndex.includes(index + 1)" :src="item.picurl" mode="aspectFill" @click="handleChange"></image>
			</swiper-item>
		</swiper>

		<!-- <uni-transition mode-class="fade"> -->
		<view class="mask" v-show="handleState">
			<view class="goBack" @click="goBack" :style="{ top: getstatusBarHeight() + 'px' }">
				<uni-icons type="back" color="#fff" size="20"></uni-icons>
			</view>
			<view class="count">{{ imgIndex }} / {{ imgNum }}</view>
			<view class="time"><uni-dateformat :date="new Date()" format="hh:mm"></uni-dateformat></view>
			<view class="date"><uni-dateformat :date="new Date()" format="MM月dd日"></uni-dateformat></view>
			<view class="footer">
				<view class="box" @click="clickInfoOpen">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>
				<view class="box" @click="clickRateOpen">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{ arrImg[imgIndex - 1]?.score }}分</view>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="28"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>
		<!-- </uni-transition> -->

		<!-- :safe-area="false" 是消除iPhone菜单键的下边距 -->
		<uni-popup ref="popup" type="bottom" :safe-area="false" :is-mask-click="false">
			<view class="popup">
				<view class="popHeader">
					<view class=""></view>
					<view class="title">壁纸信息</view>
					<view class="close" @click="clickInfoClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
				<scroll-view scroll-y>
					<view class="content">
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text user-select class="value">{{ nowImg?._id }}</text>
						</view>

						<view class="row">
							<view class="label">分类：</view>
							<text class="value class">{{ className }}</text>
						</view>

						<view class="row">
							<view class="label">发布者：</view>
							<text class="value">{{ nowImg?.nickname }}</text>
						</view>

						<view class="row">
							<text class="label">评分：</text>
							<view class="value rateBox">
								<uni-rate readonly touchable value="3.5" size="16"></uni-rate>
								<text class="score">{{ nowImg?.score }}分</text>
							</view>
						</view>

						<view class="row">
							<text class="label">摘要：</text>
							<view class="value">{{ nowImg?.description }}</view>
						</view>

						<view class="row">
							<text class="label">标签：</text>
							<view class="value tabs">
								<view class="tab" v-for="item in nowImg?.tabs" :key="item">{{ item }}</view>
							</view>
						</view>

						<view class="copyright">声明：我看到拉屎等会我卡萨丁凯撒很大拉卡萨打卡手打拉卡打撒索拉卡等哈德哈卡</view>
						
						<view class="safe-area-inset-bottom"></view>
					</view>
				</scroll-view>
			</view>
		</uni-popup>

		<uni-popup ref="rate" type="center" :is-mask-click="false">
			<view class="rate">
				<view class="popHeader">
					<view class=""></view>
					<view class="title">{{ isScore ? '评过分了呦 !!' : '壁纸评分' }}</view>
					<view class="close" @click="clickRateClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>

				<view class="content">
					<uni-rate v-model="rateValue" allowHalf :disabled="isScore" disabled-color="#ffca3e" />
					<text class="text">{{ rateValue }}分</text>
				</view>

				<view class="footer">
					<button :disabled="!rateValue || isScore" type="default" size="mini" plain @click="rateConfirm">确认评分</button>
				</view>
			</view>
		</uni-popup>
	</view>
</template>

<script setup>
import { ref, computed } from 'vue';
import { getstatusBarHeight } from '@/utils/system.js';
import { apiGet } from '@/api/apis.js';
import { onLoad,onShareAppMessage } from '@dcloudio/uni-app';
import { usePreviewDataStore } from '@/store/preview_data.js';

// 第几张图片
const imgIndex = ref(1);

// 图片数量
const imgNum = ref();

// 所有图片
const arrImg = ref([]);

// 根据索引显示不同图片
const nowImg = computed(() => arrImg.value[imgIndex.value - 1]);

// 图片所属分类
const className = ref();

const store = usePreviewDataStore();

// 加载过的图片的索引
const currentIndex = ref([]);

// 图片为最后一个或第一个时的切换变量
const changeIndex = null;

// 是否评过分
const isScore = ref(false);

onLoad(async (options) => {
	const { id = null, name = null, index = 1 } = options;
	imgIndex.value =+index;
	className.value = name;
	
	if(options.type=='share'){
		let res = (await apiGet('detailWall',{id})).data
		
		arrImg.value = res.map(e=>{
			return{
				...e,
				picurl: e.smallPicurl.replace('_small.webp', '.jpg')
			}
		})
	}
else{
	
	arrImg.value = store.loadedList.map((item) => {
		return {
			...item,

			// 更改图片地址，改为大图（将_small.webp替换成.jpg）
			picurl: item.smallPicurl.replace('_small.webp', '.jpg')
		};
	});
}
	imgNum.value = arrImg.value.length;
	toLoad();
});

// 滑动图片，改变索引
const imgChange = (e) => {
	imgIndex.value = e.detail.current + 1;
	toLoad();
};

// 显示/隐藏时间日期等
const handleState = ref(true);

// 显示/隐藏时间日期等函数
const handleChange = () => {
	handleState.value = !handleState.value;
};

// 获取弹出框dom
const popup = ref(null);
const rate = ref(null);
// 评分
const rateValue = ref(0);

// 显示信息弹出框
const clickInfoOpen = () => {
	popup.value.open();
};

// 显示评分弹出框
const clickRateOpen = () => {
	if (arrImg.value[imgIndex.value - 1].userScore) {
		isScore.value = true;
		rateValue.value = arrImg.value[imgIndex.value - 1].userScore;
	}
	rate.value.open();
};

// 点击×关闭信息弹窗
const clickInfoClose = () => {
	popup.value.close();
};

// 点击×关闭评分弹窗
const clickRateClose = () => {
	rate.value.close();
	rateValue.value = 0;
	isScore.value = false;
};

// 确认评分
const rateConfirm = async () => {
	const { classid, _id } = arrImg.value[imgIndex.value - 1];

	// 加载框
	uni.showLoading({
		title: '加载中...'
	});
	const res = await apiGet('setupScore', { classid, wallId: _id, userScore: rateValue.value });

	// 取消加载框
	uni.hideLoading();
	arrImg.value[imgIndex.value - 1].userScore = rateValue.value;
	if (res.errCode === 0) {
		uni.showToast({
			title: '评分成功',
			icon: 'none'
		});
	}

	clickRateClose();
};

// 按钮返回
const goBack = () => {
	uni.navigateBack({
		fail:()=>{
			uni.reLaunch({
				url:'/pages/index/index'
			})
		}
	})
};

// 下载图片
const clickDownload = async () => {
	// #ifdef H5
		uni.showModal({
			content:'长按图片保存',
			showCancel:false
		})
	// #endif

	// #ifndef H5

	try {
		uni.showLoading({
			title: '下载中...',
			mask: true
		});
		const { classid, _id: wallId } = arrImg.value[imgIndex.value - 1];
		const res = await apiGet('downloadWall', { classid, wallId });

		if (res.errCode != 0) throw res;

		uni.getImageInfo({
			src: arrImg.value[imgIndex.value - 1].picurl,
			success: (res) => {

				uni.saveImageToPhotosAlbum({
					filePath: res.path,
					success: (res) => {
						uni.showToast({
							title:'保存成功',
							icon:'none'
						})
					},
					fail: (err) => {
						if (err.errMsg == 'saveImageToPhotosAlbum:fail cancel') {
							uni.showToast({
								title: '保存失败，请重试',
								icon: 'none'
							});
							return
						}

						uni.showModal({
							title: '提示',
							content: '需要授权保存相册',
							confirmText: '前往设置',
							success: (res) => {
								if (res.confirm) {
									uni.openSetting({
										success: (setting) => {

											if (setting.authSetting['scope.writePhotosAlbum']) {
												uni.showToast({
													title: '获取授权成功',
													icon: 'none'
												});
											} else {
												uni.showToast({
													title: '获取授权失败',
													icon: 'none'
												});
											}
										}
									});
								}
							}
						});
					}
				});
			}
		});
	} catch (err) {

	} finally {
		uni.hideLoading();
	}
	// #endif
};

// 添加浏览过的图片的索引，同时添加当前浏览的图片的前后两张图片的索引，进行提前加载
const toLoad = () => {
	currentIndex.value.push(imgIndex.value == 1 ? arrImg.value.length : imgIndex.value - 1, imgIndex.value, imgIndex.value == arrImg.value.length ? 1 : imgIndex.value + 1);

	// 对预览过的图片的索引进行去重
	currentIndex.value = [...new Set(currentIndex.value)];
};


// 分享给朋友
onShareAppMessage(()=>{
	 return{
		 title:'鸡你太美',
		 path:`/pages/preview/preview?id=${arrImg.value[imgIndex.value - 1]._id}&type=share`
	 }
})


</script>
<style scoped lang="scss">
.preview {
	width: 100%;
	height: 100vh;
	swiper {
		width: 100%;
		height: 100%;
		image {
			width: 100%;
			height: 100%;
		}
	}

	.mask {
		// position: absolute;

		& > view {
			position: absolute;
			width: fit-content;
			color: #fff;
			left: 0;
			right: 0;
			margin: auto;
		}

		.goBack {
			width: 38px;
			height: 38px;
			background: rgba(0, 0, 0, 0.5);
			left: 30rpx;
			margin-left: 0;
			border-radius: 100px;
			top: 0;
			backdrop-filter: blur(10rpx);
			border: 1rpx solid rgba(255, 255, 255, 0.3);
			display: flex;
			align-items: center;
			justify-content: center;
		}
		.count {
			top: 10vh;
			background-color: rgba(0, 0, 0, 0.3);
			font-size: 28rpx;
			border-radius: 40rpx;
			padding: 8rpx 28rpx;
			backdrop-filter: blur(10rpx);
		}
		.time {
			font-size: 140rpx;
			top: calc(10vh + 80rpx);
			font-weight: 100;
			line-height: 1em;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		.date {
			font-size: 34rpx;
			top: calc(10vh + 240rpx);
			font-weight: 100;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		.footer {
			background: rgba(255, 255, 255, 0.8);
			bottom: 10vh;
			// width: ;
			display: flex;
			flex-direction: row;
			width: 65vw;
			height: 120rpx;
			justify-content: space-around;
			border-radius: 120rpx;
			color: #000;
			align-items: center;
			box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
			backdrop-filter: blur(20rpx);

			.box {
				display: flex;
				align-items: center;
				flex-direction: column;
				justify-content: center;
				padding: 2rpx 12rpx;

				.text {
					font-size: 26rpx;
					color: $text-font-color-2;
				}
			}
		}
	}

	.popHeader {
		display: flex;
		justify-content: space-between;
		align-items: center;

		.title {
			color: $text-font-color-2;
			font-size: 26rpx;
		}

		.close {
			padding: 6rpx;
		}
	}

	.popup {
		background: #fff;
		padding: 30rpx;
		border-radius: 30rpx 30rpx 0 0;

		scroll-view {
			max-height: 60vh;
			min-height: 30vh;

			.content {
				.row {
					display: flex;
					padding: 16rpx 0;
					font-size: 32rpx;
					line-height: 1.7em;

					.label {
						color: $text-font-color-3;
						width: 140rpx;
						text-align: right;
						font-size: 30rpx;
					}

					.value {
						flex: 1;
						width: 0;
					}

					.rateBox {
						display: flex;
						align-items: center;

						.score {
							font-size: 26rpx;
							color: $text-font-color-2;
							padding-left: 15rpx;
						}
					}

					.tabs {
						display: flex;
						flex-wrap: wrap;

						.tab {
							border: 1px solid $brand-theme-color;
							color: $brand-theme-color;
							font-size: 22rpx;
							padding: 10rpx 30rpx;
							border-radius: 40rpx;
							line-height: 1em;
							margin: 0 10rpx 10rpx 0;
						}
					}

					.class {
						color: $brand-theme-color;
					}
				}

				.copyright {
					font-size: 28rpx;
					padding: 20rpx;
					background: #f6f6f6;
					color: #666;
					border-radius: 10rpx;
					margin: 20rpx 0;
					line-height: 1.6em;
				}
			}
		}
	}

	.rate {
		background: #fff;
		padding: 30rpx;
		border-radius: 30rpx;
		width: 70vw;

		.content {
			padding: 30rpx 0;
			display: flex;
			justify-content: center;
			align-items: center;

			.text {
				color: #ffca3e;
				padding-left: 10rpx;
				width: 80rpx;
				line-height: 1em;
				text-align: right;
			}
		}
		.footer {
			padding: 10rpx 0;
			display: flex;
			align-items: center;
			justify-content: center;
		}
	}
}
</style>
<style></style>
